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1Z0-870 exam Dumps Source : MySQL 5 Certified Associate

Test Code : 1Z0-870
Test cognomen : MySQL 5 Certified Associate
Vendor cognomen : Oracle
: 240 actual Questions

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Oracle Oracle MySQL 5 Certified

Oracle MySQL 5.5 eyes windows, SQL Server | killexams.com actual Questions and Pass4sure dumps

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New Names for solar Certifications under Oracle | killexams.com actual Questions and Pass4sure dumps

Written by course of GoCertify group of workers posted: 01 September 2010

With the merger of sun certifications into the Oracle certification application, disease every sole sun certifications for Java, Solaris, MySQL, and Open workplace were renamed under the Oracle manufacturer.

On September 1, 2010, Oracle built-in the current certifications from solar Microsystems' certification software into the Oracle Certifed professional program as piece of the acquisition of sun by Oracle. each solar certification became renamed to replicate the brand original Oracle branding, as mapped out under. The content of the linked checks and scoring tolerate been not modified.

leap to: Java | Solaris | MySQL | OpenOffice

Java Certifications

customary sun callNew Oracle callSun certified Java associate Oracle certified associate, Java SE 5/SE 6 solar certified Java Programmer (SCJP) SE fiveOracle certified professional, Java SE 5 Programmer sun licensed Java Programmer (SCJP) SE 6 Oracle licensed expert, Java SE 6 Programmer sun licensed Java Developer (SCJD) Oracle licensed master, Java SE6 Developer sun licensed net piece Developer (SCWCD) EE5 Oracle certified knowledgeable, Java EE 5 net piece Developer solar certified company component Developer (SCBCD) EE5 Oracle licensed skilled, Java EE 5 company piece Developer solar certified Developer for Java internet services 5 (SCDJWS) Oracle certified expert, Java EE 5 internet features Developer solar licensed commercial enterprise Architect (SCEA) EE5 Oracle licensed master, Java EE 5 industry Architect sun certified mobile application Developer (SCMAD) Oracle certified expert, Java ME 1 cell utility Developer sun certified JSP and Servlet Developer for the Java EE6 Platform Oracle certified expert, Java Platform, enterprise version 6 JavaServer Pages and Servlet Developer sun certified EJB Developer for the Java EE6 Platform Oracle certified knowledgeable, Java Platform, enterprise edition 6 commercial enterprise JavaBeans Developer solar licensed JPA Developer for the Java EE6 Platform Oracle certified knowledgeable, Java Platform, commercial enterprise edition 6 Java Persistence API Developer solar licensed Developer for the Java internet features for the Java EE6 Oracle certified knowledgeable, Java Platform, enterprise edition 6 net capabilities Developer solar licensed Developer for the JSF for the Java EE6 Platform Oracle certified professional, Java Platform, industry version 6 JavaServer Faces Developer solar licensed professional for NetBeans IDE Oracle certified skilled, NetBeans integrated progress atmosphere 6.1 Programmer solar licensed Integrator for identity supervisor 7.1 This certification was retired with the aid of Oracle solar certified Java CAPS Integrator This certification become retired by course of Oracle  

Solaris Certifications

fashioned sun callNew Oracle callSun certified Solaris affiliate (SCSAS) Oracle certified affiliate, Oracle Solaris 10 working device sun certified system Administrator (SCSA) for Solaris OS 10 Oracle licensed professional, Oracle Solaris 10 device Administrator sun certified community Administrator (SCNA) for Solaris OS 10 Oracle certified expert, Oracle Solaris 10 community Administrator sun licensed safety Administrator (SCSECA) for Solaris OS 10 Oracle certified expert, Oracle Solaris 10 safety Administrator

MySQL Certifications

normal solar nameNew Oracle nameSun certified MySQL 5.0 Database Administrator (SCMDBA) Oracle certified professional, MySQL 5.0 Database Administrator sun licensed MySQL 5.0 Developer (SCMDEV) Oracle certified skilled, MySQL 5.0 Developer solar certified MySQL affiliate (SCMA) Oracle licensed affiliate, MySQL 5.0/5.1/5.5Sun licensed MySQL 5.1 Cluster Database Administrator (SCMCDBA) Oracle certified knowledgeable, MySQL 5.1 Cluster Database Administrator

OpenOffice Certifications

customary sun callNew Oracle callSun licensed OpenOffice.org Calc specialistOracle licensed expert, OpenOffice.org Calc sun certified OpenOffice.org stimulate professionalOracle licensed skilled, OpenOffice.org provoke solar licensed OpenOffice.org creator expertOracle certified professional, OpenOffice.org creator

The particular person assessments had been renamed as well, following the equal naming scheme. A pdf version of this listing that includes the examination names is obtainable on Oracle's blog.


Oracle Updates Its Linux Distro with pink Hat commercial enterprise Linux 7.6 Compatibility | killexams.com actual Questions and Pass4sure dumps

Oracle introduced the liberate and regularly occurring availability of the Oracle commercial enterprise Linux 7.6 operating gadget, a upkeep update synced with the upstream repositories of red Hat's pink Hat industry Linux 7.6.

Derived from the sources of crimson Hat commercial enterprise Linux 7.6, the Oracle enterprise Linux 7 update 6 free up ships with Oracle's Unbreakable industry Kernel (UEK) release 5 version four.14.35-1818.3.three for both 64-bit (x86_64) and ARM architectures, and the pink Hat appropriate Kernel three.10.0-957, which is only accessible for sixty four-bit techniques.

"existing functions in person belt will continue to rush unmodified on Oracle Linux 7 update 6 with UEK unlock 5 and no re-certifications are needed for applications already licensed with red Hat industry Linux 7 or Oracle Linux 7," mentioned Avi Miller, Product management Director, Oracle Linux, within the liberate announcement.

here's what's original in Oracle commercial enterprise Linux 7 update 6

besides up to date kernels, the Oracle industry Linux 7 update 6 liberate comes with numerous original features and improvements, together with support for managing path, mount, and timer systemd unit information within the Pacemaker component, as smartly because the means to track kit installations and upgrades using audit hobbies.

This unencumber additionally provides assist for encrypting keys in a depended on Platform Module 2.0 (TPM2) chip to the Clevis automatic encryption framework, a office that's handiest purchasable for 64-bit methods, support for cloak and kick storage layouts in parallel NFS (pNFS), and multi-queue I/O scheduling for SCSI (scsi-mq).

A Technical Preview (TP) of DAX (Direct access) for EXT4 and XFS file systems is additionally available in Oracle industry Linux 7 supplant 6 to permit direct persistent reminiscence mapping from an software. For AArch64 (ARM64) systems, this release allows for DTrace and ports the DTrace code in the Unbreakable commercial enterprise Kernel unlock 5 repo.

Oracle has stated that they're going to continue to assist the Btrfs file gadget in Oracle industry Linux although red Hat deprecated Btrfs support in the pink Hat suitable Kernel. which you could download Oracle industry Linux 7 update 6 for gratis at this time via their Linux software portal or at once from Oracle.




Killexams.com 1Z0-870 Dumps and actual Questions

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1Z0-870 exam Dumps Source : MySQL 5 Certified Associate

Test Code : 1Z0-870
Test cognomen : MySQL 5 Certified Associate
Vendor cognomen : Oracle
: 240 actual Questions

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MaxScale: A original tool to resolve Your MySQL Scalability Problems | killexams.com actual questions and Pass4sure dumps

Written by Yves Trudeau

Ever since MySQL replication has existed, people tolerate dreamed of a kindly solution to automatically split read from write operations, sending the writes to the MySQL master and load balancing the reads over a set of MySQL slaves. While if at first it seems light to solve, the reality is far more complex.

First, the tool needs to execute positive it parses and analyses correctly every sole the forms of SQL MySQL supports in order to sort writes from reads, something that is not as light as it seems. Second, it needs to pick into account if a session is in a transaction or not.

While in a transaction, the default transaction isolation even in InnoDB, Repeatable-read, and the MVCC framework insure that you’ll pick up a consistent view for the duration of the transaction. That means every sole statements executed inside a transaction must rush on the master but, when the transaction commits or rollbacks, the following select statements on the session can be again load balanced to the slaves, if the session is in autocommit mode of course.

Then, what execute you execute with sessions that set variables? execute you restrict those sessions to the master or you replay them to the slave? If you replay the set variable commands, you requisite to associate the client connection to a set of MySQL backend connections, made of at least a master and a slave. What about temporary objects relish with “create temporary table…”? How execute you deal when a slave lags behind or what if worse, replication is broken? Those are just a few of the challenges you pan when you want to build a tool to accomplish read/write splitting.

Over the last few years, a few products tolerate tried to tackle the read/write split challenge. The MySQL_proxy was the first attempt I am conscious of at solving this problem but it ended up with many limitations. ScaleARC does a much better job and is very usable but it stills has some limitations. The latest contender is MaxScale from MariaDB and this post is a road narrative of my first implementation of MaxScale for a customer.

Let me first insert what is MaxScale exactly. MaxScale is an open source project, developed by MariaDB, that aims to be a modular proxy for MySQL. Most of the functionality in MaxScale is implemented as modules, which includes for example, modules for the MySQL protocol, client side and server side.

Other families of available modules are routers, monitors and filters. Routers are used to determine where to transmit a query, Read/Write splitting is accomplished by the readwritesplit router. The readwritesplit router uses an embedded MySQL server to parse the queries… quite ingenious and hard to beat in term of query parsing.

There are other routers available, the readconnrouter is basically a round-robin load balancer with optional weights, the schemarouter is a course to shard your data by schema and the binlog router is useful to manage a big number of slaves (have a study at Booking.com’s Jean-François Gagné’s talk at PLMCE15 to discern how it can be used).

Monitors are modules that maintain information about the backend MySQL servers. There are monitors for a replicating setup, for Galera and for NDB cluster. Finally, the filters are modules that can be inserted in the software stack to exploit the queries and the resultsets. every sole those modules tolerate well defined APIs and thus, writing a custom module is rather easy, even for a non-developer relish me, basic C skills are needed though. every sole event handling in MaxScale uses epoll and it supports multiple threads.

Over the last few months I worked with a customer having a challenging problem. On a PXC cluster, they tolerate more than 30k queries/s and because of their write pattern and to avoid certification issues, they want to tolerate the possibility to write to a sole node and to load balance the reads. The application is not able to execute the Read/Write splitting so, without a tool to execute the splitting, only one node can be used for every sole the traffic. Of course, to execute things easy, they utilize a lot of Java code that set tons of sessions variables. Furthermore, for ISO 27001 compliance, they want to be able to log every sole the queries for security analysis (and too for performance analysis, why not?). So, lofty query rate, Read/Write splitting and complete query logging, relish I said a challenging problem.

We experimented with a few solutions. One was a hardware load balancer that failed miserably – the implementation was just too simple, using only regular expressions. Another solution they tried was ScaleArc but it needed many rules to whitelist the set session variables and to iterate them to multiple servers. ScaleArc could tolerate done the job but every sole the rules increases the CPU load and the cost is per CPU. The queries could tolerate been sent to rsyslog and aggregated for analysis.

Finally, the HA implementation is rather minimalist and they had some issues with it. Then, they tried MaxScale. At the time, it was not GA and was (is still) young. Nevertheless, I wrote a query logging filter module to transmit every sole the queries to a Kafka cluster and they gave it a try. Kafka is extremely well suited to record a big flood of queries relish that. In fact, at 30k qps, the 3 Kafka nodes are barely stirring with cpu under 5% of one core. Although they encountered some issues, remember MaxScale is very young, it appeared to be the solution with the best potential and so they moved forward.

The folks at MariaDB behind MaxScale tolerate been very responsive to the problems they encountered and they finally got to a very usable point and the test in the pilot environment was successful. The solution is now been deployed in the staging environment and if every sole goes well, it will be in production soon. The following pattern is simplified view of the internals of MaxScale as configured for the customer:

MaxScale internals

The blocks in the pattern are nearly every sole defined in the configuration file. They define a TCP listener using the MySQL protocol (client side) which is linked with a router, either the readwritesplit router or the readconn router.

The first step when routing a query is to allocate the backends. This is where the read/write splitting conclusion is made. Also, as piece of the steps required to route a query, 2 filters are called, regexp (optional) and Genlog. The regexp filter may be used to equatorial patch a query and the Genlog filter is the logging filter I wrote for them. The Genlog filter will transmit a json string containing about what can be organize in the MySQL general query log plus the execution time.

Authentication attempts are too logged but the process is not illustrated in the figure. A key point to note, the authentication information is cached by MaxScale and is refreshed upon authentication failure, the refresh process is throttled to avoid overloading the backend servers. The servers are continuously monitored, the interval is adjustable, and the server status are used when the conclusion to allocate a backend for a query is done.

In term of HA, I wrote a simple Pacemaker resource agent for MaxScale that does a few fancy things relish load balancing with IPTables (I’ll talk about that in future post). With Pacemaker, they tolerate a complete fledge HA solution with quorum and fencing on which they can rely.

Performance wise, it is very kindly – a sole core in a virtual environment was able to read/write split and log to Kafka about 10k queries per second. Although MaxScale supports multiple threads, they are quiet using a sole thread per process, simply because it yields a slightly higher throughput and the custom Pacemaker agent deals with the utilize of a clone set of MaxScale instances. remember they started early using MaxScale and the beta versions were not dealing gracefully with threads so they built around multiple sole threaded instances.

So, since a conclusion is needed, MaxScale has proven to be a very useful and resilient tool that allows to intricate solutions to problems that were very hard to tackle before. In particular, if you requisite to accomplish read/write splitting, then, try MaxScale, it is best solution for that purpose I tolerate organize so far. reserve in touch, I’ll surely write other posts about MaxScale in the near future.


Customize your MySQL database in Docker | killexams.com actual questions and Pass4sure dumps

Many developers utilize Docker to spin up a local database. This makes it light to test their code and write data without installing and configuring a lot of tools. In this post I’ll define how you can customize your Docker database. I’ll define it for MySQL but it’s the identical for PostgreSQL! We will create a custom MySQL which contains your desired tables and data.

1. Create SQL scripts

We will create SQL scripts which hold the SQL statements they want to execute on their database. Create a directory in which they will work. too create a sub directory where they will store our .sql scripts.

$ mkdir -p ~/my-mysql/sql-scripts$ cd ~/my-mysql/sql-scripts

I want to customize my database with a table called employees. The table needs to hold one row with an employee (first name, last name, department and email).

Write a CreateTable.sql. This file contains the SQL statement to create a table called employees. They will add four columns to their table

CREATE TABLE employees (first_name varchar(25),last_name varchar(25),department varchar(15),email varchar(50));

Write a InsertData.sql. This file contains their statement to insert data in the table ‘employees’.

INSERT INTO employees (first_name, last_name, department, email) VALUES ('Lorenz', 'Vanthillo', 'IT', 'lvthillo@mail.com');

Execute the tree command to verify that your two scripts exist and are saved in the privilege directory.

$ cd ~/my-mysql$ tree└── sql-scripts├── CreateTable.sql└── InsertData.sql 2. Create a Docker image for your customized MySQL Database

The scripts are ready. Now they can write a Dockerfile to create their own Docker image (based on the official image of MySQL).

$ cd ~/my-mysql/$ vi Dockerfile

Content of Dockerfile:

# Derived from official mysql image (our foundation image)FROM mysql # Add a databaseENV MYSQL_DATABASE company # Add the content of the sql-scripts/ directory to your image# every sole scripts in docker-entrypoint-initdb.d/ are automatically# executed during container startupCOPY ./sql-scripts/ /docker-entrypoint-initdb.d/

Create your Docker image:

$ cd ~/my-mysql/$ docker build -t my-mysql .Sending build context to Docker daemon 4.608kBStep 1/2 : FROM mysqllatest: Pulling from library/mysqlDigest: sha256:691c55aabb3c4e3b89b953dd2f022f7ea845e5443954767d321d5f5fa394e28cStatus: Downloaded newer image for mysql:latest---> 5195076672a7Step 2/2 : ADD sql-scripts/ /docker-entrypoint-initdb.d/---> 25065c3d93c0Successfully built 25065c3d93c0Successfully tagged my-mysql:latest

And start your MySQL container from the image:

$ docker rush -d -p 3306:3306 --name my-mysql \-e MYSQL_ROOT_PASSWORD=supersecret my-mysql

Now they can verify. They will exec inside the container:

$ docker exec -it my-mysql bashroot@c86ff80d7524:/# mysql -uroot -pEnter password: (supersecret)mysql> exhibit databases;+--------------------+| Database |+--------------------+| information_schema || company || mysql || performance_schema || sys |+--------------------+5 rows in set (0.00 sec) mysql> utilize company;Reading table information for completion of table and column namesYou can eddy off this feature to pick up a quicker startup with -A Database changedmysql> exhibit tables;+-------------------+| Tables_in_company |+-------------------+| employees |+-------------------+1 row in set (0.00 sec) mysql> exhibit columns from employees;+------------+-------------+------+-----+---------+-------+| realm | nature | Null | Key | Default | Extra |+------------+-------------+------+-----+---------+-------+| first_name | varchar(25) | YES | | NULL | || last_name | varchar(25) | YES | | NULL | || department | varchar(15) | YES | | NULL | || email | varchar(50) | YES | | NULL | |+------------+-------------+------+-----+---------+-------+4 rows in set (0.00 sec) mysql> select * from employees;+------------+-----------+------------+-------------------+| first_name | last_name | department | email |+------------+-----------+------------+-------------------+| Lorenz | Vanthillo | IT | lvthillo@mail.com |+------------+-----------+------------+-------------------+1 row in set (0.01 sec)

It works! They tolerate their customized MySQL database Docker image! This is a really kindly solution for local progress between multiple developers. You can just share the Docker image and every developer can utilize the database by just starting a container from the image.But in some cases this is not the best solution:

  • If you insert a lot of data your image size will grow significantly
  • Need to build a original image when you want to update the data
  • That’s why there is another course to customize your Docker MySQL.

    3. utilize bind mounts to customize your MySQL database in Docker

    In this last chapter they will simply mount the scripts inside the official MySQL Docker container.

    $ docker rush -d -p 3306:3306 --name my-mysql \-v ~/my-mysql/sql-scripts:/docker-entrypoint-initdb.d/ \-e MYSQL_ROOT_PASSWORD=supersecret \-e MYSQL_DATABASE=company \mysql

    And they can verify again! utilize the identical steps as they did before: exec inside the container and check if the table and data does exist!

    Using this routine is already more resilient but it will be a exiguous bit harder to divide among the developers. They every sole requisite to store the scripts in a positive directory on their local machine and they requisite to point to that directory when they execute the docker rush command.

    Conclusion

    In this blog I’ve described how you can create your custom MySQL database in Docker. We’ve explored the two methods:

  • Custom MySQL Docker image
  • Bind mounts to mount scripts inside container
  • We too saw some advantages and disadvantages of each method. Hope you enjoyed it!


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